Trait wasm_bindgen::convert::FromWasmAbi

pub trait FromWasmAbi: WasmDescribe {
    type Abi: WasmAbi;

    // Required method
    unsafe fn from_abi(js: Self::Abi) -> Self;
}

A trait for anything that can be recovered by-value from the wasm ABI boundary, eg a Rust u8 can be recovered from the wasm ABI u32 type.

This is the by-value variant of the opposite operation as IntoWasmAbi.

⚠️ Unstable

This is part of the internal convert module, no stability guarantees are provided. Use at your own risk. See its documentation for more details.

Required Associated Types

type Abi: WasmAbi

The wasm ABI type that this converts from when coming back out from the ABI boundary.

Required Methods

unsafe fn from_abi(js: Self::Abi) -> Self

Recover a Self from Self::Abi.

Safety

This is only safe to call when – and implementations may assume that – the supplied Self::Abi was previously generated by a call to <Self as IntoWasmAbi>::into_abi() or the moral equivalent in JS.

Object Safety

This trait is not object safe.

Implementations on Foreign Types

impl FromWasmAbi for Option<f32>

type Abi = Option<f32>

unsafe fn from_abi(js: Self::Abi) -> Self

impl FromWasmAbi for Option<f64>

type Abi = Option<f64>

unsafe fn from_abi(js: Self::Abi) -> Self

impl FromWasmAbi for Option<i32>

type Abi = Option<i32>

unsafe fn from_abi(js: Self::Abi) -> Self

impl FromWasmAbi for Option<i64>

type Abi = Option<i64>

unsafe fn from_abi(js: Self::Abi) -> Self

impl FromWasmAbi for Option<isize>

type Abi = Option<i32>

unsafe fn from_abi(js: Self::Abi) -> Self

impl FromWasmAbi for Option<u32>

type Abi = Option<u32>

unsafe fn from_abi(js: Self::Abi) -> Self

impl FromWasmAbi for Option<u64>

type Abi = Option<u64>

unsafe fn from_abi(js: Self::Abi) -> Self

impl FromWasmAbi for Option<usize>

type Abi = Option<u32>

unsafe fn from_abi(js: Self::Abi) -> Self

impl FromWasmAbi for bool

type Abi = u32

unsafe fn from_abi(js: u32) -> bool

impl FromWasmAbi for char

type Abi = u32

unsafe fn from_abi(js: u32) -> char

impl FromWasmAbi for f32

type Abi = f32

unsafe fn from_abi(js: f32) -> Self

impl FromWasmAbi for f64

type Abi = f64

unsafe fn from_abi(js: f64) -> Self

impl FromWasmAbi for i8

type Abi = u32

unsafe fn from_abi(js: u32) -> Self

impl FromWasmAbi for i16

type Abi = u32

unsafe fn from_abi(js: u32) -> Self

impl FromWasmAbi for i32

type Abi = i32

unsafe fn from_abi(js: i32) -> Self

impl FromWasmAbi for i64

type Abi = i64

unsafe fn from_abi(js: i64) -> Self

impl FromWasmAbi for isize

type Abi = i32

unsafe fn from_abi(js: i32) -> Self

impl FromWasmAbi for u8

type Abi = u32

unsafe fn from_abi(js: u32) -> Self

impl FromWasmAbi for u16

type Abi = u32

unsafe fn from_abi(js: u32) -> Self

impl FromWasmAbi for u32

type Abi = u32

unsafe fn from_abi(js: u32) -> Self

impl FromWasmAbi for u64

type Abi = u64

unsafe fn from_abi(js: u64) -> Self

impl FromWasmAbi for usize

type Abi = u32

unsafe fn from_abi(js: u32) -> Self

impl FromWasmAbi for String

type Abi = <Vec<u8> as FromWasmAbi>::Abi

unsafe fn from_abi(js: Self::Abi) -> Self

impl<T> FromWasmAbi for Option<*const T>

type Abi = Option<u32>

unsafe fn from_abi(js: Option<u32>) -> Option<*const T>

impl<T> FromWasmAbi for Option<*mut T>

type Abi = Option<u32>

unsafe fn from_abi(js: Option<u32>) -> Option<*mut T>

impl<T> FromWasmAbi for *const T

type Abi = u32

unsafe fn from_abi(js: u32) -> *const T

impl<T> FromWasmAbi for *mut T

type Abi = u32

unsafe fn from_abi(js: u32) -> *mut T

impl<T> FromWasmAbi for Vec<T>

where Box<[T]>: FromWasmAbi<Abi = WasmSlice>,

type Abi = <Box<[T]> as FromWasmAbi>::Abi

unsafe fn from_abi(js: Self::Abi) -> Self

impl<T> FromWasmAbi for NonNull<T>

type Abi = u32

unsafe fn from_abi(js: Self::Abi) -> Self

impl<T: OptionFromWasmAbi> FromWasmAbi for Option<T>

type Abi = <T as FromWasmAbi>::Abi

unsafe fn from_abi(js: T::Abi) -> Self

impl<T: VectorFromWasmAbi> FromWasmAbi for Box<[T]>

type Abi = <T as VectorFromWasmAbi>::Abi

unsafe fn from_abi(js: Self::Abi) -> Self

Implementors

impl FromWasmAbi for JsValue

type Abi = u32

impl<T: FromWasmAbi> FromWasmAbi for Clamped<T>

type Abi = <T as FromWasmAbi>::Abi